Organisers rarely release the Shambala line up until the gates open, but the festival bosses have confirmed that Ghostpoet and The Hidden Orchesta will play this summer.
The Shambala Beatbox Orchestra, The Alternative Dubstep Orchestra and Submotion Orchestra will also appear over the weekend.
Lamb, Johnny Clarke, Engine Earz Experiment, Congo Natty, The Bollywood Brass Band and The Correspondents are among the names listed to perform also.
Weekend Shambala 2011 tickets with camping are on sale now, priced at £119.
Shambala 2011 takes place at 25-28 August at a secret location, believed to be a country estate in Northamptonshire.